JP3751478B2 - Electromagnetic induction power feeder - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to an electromagnetic induction power feeding device that feeds power mainly to an induction connector provided in a vehicle.
[0002]
[Prior art]
  As disclosed in Japanese Utility Model Laid-Open No. 06-04301, an induction connector using an electromagnetic induction phenomenon is disclosed as a power supply device for a battery-driven automobile. The basic configuration is that a magnetic circuit (closed magnetic circuit) is formed between coils for electromagnetic induction, and AC power is output to the primary coil on the power supply side to generate electromotive force on the secondary coil on the load side. Yes.
[0003]
  By the way, the present applicant is considering not only the battery-powered automobile but also the adoption of the induction connector as described above in a general automobile power supply device. For example, when power is supplied to the electrical components of a door from the vehicle body side, electromagnetic induction cores with coils for electromagnetic induction are provided on the vehicle body side and the door side, respectively, and wound on the electromagnetic induction core (primary core) on the vehicle body side. A magnetic circuit (closed magnetic circuit) is configured between the coil (primary coil) and the coil (secondary coil) wound around the electromagnetic induction core (secondary core) on the door side, and AC is supplied to the primary coil. Then, by generating an electromotive force in the secondary coil, the electrical component on the door side is energized.
[0004]
[Problems to be solved by the invention]
  In order to establish the power supply system as described above, it is necessary to connect an AC power source to the primary coil of the induction connector. Here, since the DC power supply device of the vehicle is a DC power supply, it is necessary to provide an inverter between the DC power supply device and the induction connector in order to connect the induction connector to the DC power supply device.
[0005]
  However, when such an inverter is provided, there is a problem that not only the cost is increased, but also the weight is increased and the power feeding mechanism is bulky.
[0006]
  In addition, switching elements that are the source of electromagnetic noise are used as essential components for inverters. However, providing such an inverter makes it difficult to take countermeasures against electromagnetic noise, and induction connectors can be used. There was also a problem that the electrical components were restricted.
[0007]
  In addition, the inverter usually has a circuit unit including a switching element unit, a cooling fan, an electric field capacitor, a relay, a fuse and the like in the casing, and requires maintenance. In addition, when trouble occurs, it is necessary to replace the switching element unit and the gate control board. Therefore, the addition of such an inverter necessitates inspection / repair at a plurality of locations when trouble occurs. There was also a problem that maintenance was troublesome.
[0008]
  The present invention has been made in view of the above problems, and an object of the present invention is to provide an electromagnetic induction power supply device that is capable of establishing an inexpensive power supply system that is excellent in maintainability, is light in weight, and is easy to prevent noise. .
[0009]
[Means for Solving the Problems]
  The present invention includes a DC power supply device, an AC power output terminal,A transformer having a transformer primary coil connected to the DC power supply device and a transformer secondary coil magnetically coupled to the transformer primary coil and connected to the AC current output terminal;In an electromagnetic induction power supply device provided in a vehicle mounted on a vehicle body with an inverter for outputting AC power from the DC power supply device to the AC power output terminal,For connectorPrimary coil and thisFor connectorForm a magnetic circuit with the primary coilFor connectorAn inductive connector having a secondary coil;For this induction connector connectorThe primary coilA transformer connector side secondary coil provided separately from the transformer secondary coil connected to the AC current output terminal and magnetically coupled to the transformer primary coil in common with the transformer secondary coil.This is a connected electromagnetic induction power supply device.
[0010]
  In this invention, when adopting the induction connector,For connectorThe primary coil of the inverter that outputs AC power to the AC power output terminal of the vehicleSecondary coil for connector side for transformerIt is possible to share this inverter as an inverter for an induction connector.
[0011]
  Further, since the transformer connector side secondary coil is magnetically coupled to the transformer primary coil common to the transformer secondary coil connected to the AC power output terminal, the voltage of the induction connector is converted. In this case, it becomes possible to use the primary coil for transformer provided in the inverter for both the transformation of the AC power output terminal and the transformation of the induction connector.
[0012]
  As an aspect of the induction connector, the primary coil and the secondary coil are arranged so as to be relatively rotatable around a predetermined rotation axis while the primary coil and the secondary coil face each other, and the primary coil and the secondary coil. A contact / separation type connector that allows the coil to approach / separate from each other is conceivable. Moreover, as an example of use of the induction connector, it is exemplified that the secondary coil is connected to the electrical component of the door.
[0013]
  A plurality of induction connectors may be connected to the inverter. In this case, more induction connectors share the inverter.
[0014]
  The inverterComprises a casing containing the transformer, and the casing is connected to the transformer connector side secondary coil and the casingInduction connectorFor connectorThe output terminal for the induction connector connected to the primary coil is installed.But morepreferable. If it does in this way, it will also become possible to share a casing. Further, the primary coil of the induction connector can be connected to the inverter via, for example, a wire harness.
[0015]
  Furthermore, it is preferable that the switching element of the inverter is surrounded by a grounded metal member.
[0016]
  If it does in this way, the electric power of the said inverter will be supplied to the primary coil of an induction | guidance | derivation connector in the state in which the electromagnetic noise by a switching element was avoided as much as possible by the metal member.
[0017]
  In addition, the induction connector may include a rotary connector that is disposed so as to be relatively rotatable around a predetermined rotation axis while the primary coil and the secondary coil face each other. preferable.
[0018]
  In the present invention, for example, when power is supplied to an electrical component mounted on a hinged door, it is possible to suitably supply power to an electrical component that requires power supply regardless of the open / closed state of the door.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
  Hereinafter, embodiments of the present invention will be described in detail.
[0020]
  FIG. 1 is a circuit diagram showing a schematic configuration according to an embodiment of the present invention. 2 and 3 are perspective views schematically showing the mounting example of FIG.
[0021]
  With reference to these drawings, the vehicle according to the illustrated embodiment includes a DC power supply device PW and an inverter CV connected to the DC power supply device PW via an input harness WH1 in a vehicle body B. .
[0022]
  The inverter CV has a switching element CV2 in the casing CV1, and the switching element CV2 is fed by the input harness WH1.
[0023]
  The switching element CV2 is constituted by, for example, a semiconductor switch unit in which a power thyristor and a transistor are combined. The switching element CV2 is mounted on a substrate (not shown) or the like to constitute a switching element unit, and its periphery is surrounded by a grounded metal (for example, iron) surrounding board CV3. Moreover, you may employ | adopt a noise filter as needed. Thereby, the electromagnetic noise from switching element CV2 (or switching element unit) is interrupted | blocked. On the output side of the switching element CV2, the primary coil of the transformer CV4(Primary coil for transformer)CV41 is connected.
[0024]
  In the illustrated example, the primary coil CV41 includesSecondary coil for transformerSecondary coil CV42And a secondary coil CV43 which is a transformer side secondary coilAre magnetically coupled. A rectifying / smoothing circuit CV5, a pulse width modulation PWM circuit CV6 (only the secondary coil CV42), and a filter circuit CV7 are connected to the secondary coils CV42 and CV43, and an output terminal on one secondary coil CV42 side. An AC output outlet B1 is connected to T1, and an output terminal T2 on the other secondary coil CV43 side is connected to a DC power output connector B3 via an AC / DC converter B2.
[0025]
  Where aboveIt is a secondary coil on the connector side for transformerThe induction coil 1 (2) is connected to the secondary coil CV43 through an output harness WH2 connected to the induction connector output terminal T3 and the induction connector output terminal T3 provided in the casing CV1.
[0026]
  The induction connector 1 (2) energizes the electrical components 1a and 2a provided on the rotary back door DB (see FIG. 2) and the side door DS (see FIG. 3) attached to the vehicle body B. Is to do. As an induction | guidance | derivation connector applicable to this embodiment, the rotation type connector 1 and the contact / separation type connector 2 are illustrated.
[0027]
  The rotary connector 1 is an induction connector having electromagnetic induction coils 15a and 25a that can be rotated around a hinge of a rotary door DB (DS) as will be described later. As the electrical component 1a to which the rotary connector 1 is connected, the lamp L (see FIG. 2) is used for the back door DB, and the power window motor M (see FIG. 3) is used for the rotary side door DS. And lamps.
[0028]
  On the other hand, the contact / separation type connector 2 is an induction connector in which the electromagnetic induction coils 15a and 25a can contact and separate from each other. Examples of the electrical component 2a to which the contact / separation connector 2 is connected include a wiper motor M1, a power door lock motor M2 (see FIG. 3), a defogger D (see FIG. 2) and the like for the back door DB. The side door DS is exemplified by a door mirror driving motor in addition to the power door locking motor M2. In FIG. 1, reference numeral 1b denotes a rectifying / smoothing circuit inserted between the induction connector 1 (2) and the electrical component 1a (2a).
[0029]
  Although not shown in the figure, the casing CV1 has a through hole formed in one wall surface, and the input harness WH1, the output harness WH2, and the like are connected to corresponding terminals through the through hole.
[0030]
  Next, the structure of the induction | guidance | derivation connectors 1 and 2 applicable to this embodiment is demonstrated.
[0031]
  4 is a perspective view of the rotary connector 1 that can be employed in the embodiment of FIG. 1, FIG. 5 is a cross-sectional view of FIG. 4, FIG. 6 is an exploded cross-sectional view of FIG. It is.
[0032]
  With reference to these drawings, the rotary connector 1 is configured so that a primary core unit 10 attached to the vehicle body B side and a secondary core unit 20 attached to the door DB (DS) side are relatively rotated by a hinge shaft 3. It is movably linked.
[0033]
  As shown in FIG. 5, the hinge shaft 3 is provided with a head 3a and has a screw hole 3b concentrically at the free end, and both units 10 are connected by bolts 3d screwed into the screw hole 3b. , 20 are separably connected.
[0034]
  Each of the core units 10 and 20 includes an attachment plate 11 and 21, holder portions 12 and 22 projecting from the attachment plates 11 and 21, and coil units 15 and 25 built in the holder portions 12 and 22, respectively. Have.
[0035]
  Each holder part 12, 22 is formed with concentric recesses 12 e, 22 e that open toward the other side concentrically with the insertion holes 12 c, 22 c of the hinge shaft 3, thereby being housed inside. The coil units 15 and 25 can be concentrically opposed to each other.
[0036]
  Each coil unit 15, 25 is a primary coil assembled concentrically with the hinge shaft 3.(Primary coil for connector)15a and secondary coil(Secondary coil for connector)25a and cores 15b and 25b around which the coils 15a and 25a are respectively wound.
[0037]
  Each of the coils 15a and 25a is configured by winding an electric wire in an annular shape. Each of the cores 15b and 25b is made of a ferromagnetic material having a small magnetic resistance such as ferrite.
[0038]
  In the illustrated embodiment, the outer periphery of the coil 15a of the primary core unit 10 is arranged concentrically with the inner periphery of the coil 25a of the secondary core unit 20, so that both are magnetically coupled.
[0039]
  More specifically, the core 15b of one of the coil units 15 includes a flange portion 15d that fits inside the housing recess 12e of the holder portion 12, and a boss portion 15f that is formed concentrically with the flange portion 15d. Is an annular sintered material having concentricity. The concentricity between the hinge shaft insertion hole 12c of the holder portion 12 and the core 15b is secured by concentrically fitting the boss 12h that defines the housing recess 12e of the holder portion 12 to the inner periphery of the core 15b. The coil 15a is wound around the outer periphery of the boss portion 15f of the core 15b. Further, the core 25b of the other coil unit 25 is a bottomed cylindrical body fitted in the housing recess 22a, and integrally includes a peripheral wall 25c and an annular low portion 25d. A coil 25a wound in an annular shape is fitted into the inner periphery of the core 25b. Then, by introducing the counterpart coil 15a into the inner peripheral portion of the coil 25a, both the coils 15a and 25a are arranged concentrically in a state of being opposed in the radial direction.
[0040]
  An arc-shaped slit 22e formed concentrically with the hinge shaft 3 is formed in the holder portion 22 of the secondary coil unit 20 according to the illustrated embodiment. Due to the slit 22e, the outer peripheral wall 22f of the holder portion 22 has a cylindrical shape that can be fitted into the receiving recess 12e of the counterpart holder portion 12. At the same time, the outer peripheral wall 12f of the holder portion 12 of the primary coil unit 10 is fitted into the slit 22e, and concentricity is ensured in a state in which relative rotation is possible. Furthermore, the end surface 12 g of one holder part 12 is brought into contact with a shoulder part 22 g formed on the free end side of the other holder part 22. Thereby, when both the holder parts 12 and 22 are connected by the hinge shaft 3, they are assembled in a state in which they can be relatively displaced in the circumferential direction. As a result, the coil units 15 and 25 are concentrically opposed in the radial direction.
[0041]
  In order to perform wiring of the coils 15a and 25a, the holder portions 12 and 22 are formed with bottomed accommodation holes 16 and 26 and open to the corresponding mounting plates 11 and 21, respectively. The lead wires 17 and 27 of the connectors 18 and 28 are introduced into the receiving holes 16 and 26, and are electrically connected to the corresponding coils 15a and 25a. Thereby, the primary coil 15a can be electrically connected to the inverter CV of the vehicle body B, and the secondary coil 25a can be electrically connected to the electrical component 1a.
[0042]
  Next, a specific example of the contact / separation connector 2 used in combination with the above-described rotary connector 1 will be described with reference to FIGS.
[0043]
  FIG. 8 is an example of a contact / separation connector 2 applicable to the present invention, and is a cross-sectional view showing the door in an open state. FIG. 9 is a contact / separation connector of FIG. FIG. 10 is a cross-sectional view showing a fitting state of the connector of FIG.
[0044]
  Referring to these drawings, the contact / separation type connector 2 has two coil units 210 and 220 that can be contacted and separated from each other. One coil unit 210 is provided at the opening edge of the vehicle body B, and the other The coil unit 220 is attached to the door DB (DS) at a position facing the one coil unit 210 so as to be fitted.
[0045]
  One coil unit 210 has a slider 213 housed in a housing recess 212 formed in the vehicle body B. The housing recess 212 and the slider 213 are both formed in a circular cross section, and axial ribs 212 a that serve as detents protrude from a plurality of locations in the circumferential direction of the housing recess 212. On the other hand, on the outer peripheral surface of the slider 213, slits 213a that slide-fit with the ribs 212a are formed for the respective ribs 212a. Thus, the slider 213 is accommodated in the accommodating recess 212 so as to be displaceable only in the axial direction. Further, a stopper (not shown) is provided at the opening edge of the housing recess 212, and the stopper prevents the slider 213 from protruding beyond the vehicle body B beyond the joining position shown in FIG.
[0046]
  A circular recess 213b is formed on the front surface of the slider 213, and the flange 214a of the core 214 is fitted into the recess 213b so that the core 214 projects concentrically toward the door DB (DS). Yes. The core 214 is formed by, for example, ferrite powder being sintered, has a cylindrical body 214b having a flange portion 214a concentrically, and a primary coil 215 is wound around the cylindrical body 214b. Further, in the illustrated example, an annular permanent magnet 216 is embedded in the front surface of the slider 213.
[0047]
  A plurality of coil springs 217 are interposed between the slider 213 and the housing recess 212. In the free state, the coil spring 217 holds the slider 213 in a state of being retracted to the inner back side of the housing recess 212. In this retracted position, as shown in FIG. 8, only the tip of the columnar body 214 b out of the core 214 attached to the slider 213 is in a state of protruding from the outer surface of the vehicle body B. Further, the coil spring 217 is configured so that the slider 213 is moved by the magnetic force between the permanent magnet 223 provided in the coil unit 220 on the door DB (DS) side and the permanent magnet 216 in the coupled state of the coil units 210 and 220 described below. The primary coil 215 is pulled and allowed to move to the joining position via the slider 213.
[0048]
  Next, the door DB (DS) side coil unit 220 has a core 221 embedded in the door DB (DS). The core 221 is formed in a bottomed cylindrical shape formed by, for example, sintering ferrite powder. A secondary coil 222 formed by winding an electric wire in a cylindrical shape is fitted concentrically to the inner peripheral portion 221a of the core 221. The door DB (DS) is fitted with a permanent magnet 223 arranged concentrically outside the core 221. The permanent magnet 223 attracts the coil unit 210 on the vehicle body B side to the elastic force of the coil spring 217 by attracting the permanent magnet 216 of the coil unit 210 on the vehicle body B side when the door DB (DS) is closed. The primary coil 215 is moved to the joining position via the slider 213 by pulling against it.
[0049]
  In the above configuration, when the door DB (DS) is open, the coil units 210 and 220 are in a positional relationship apart from each other as shown in FIG. In this state, no tensile force acts between the permanent magnets 216 and 223 provided in the coil units 210 and 220, and the primary coil 215 is separated from the secondary coil 222. As a result, no electromotive force is generated in the secondary coil 222, and the electrical component 2a of the door DB (DS) is not energized.
[0050]
  On the other hand, when the door DB (DS) is rotated in the closing direction, the coil units 210 and 220 are brought into contact with each other immediately before the door is closed, and the cylindrical body 214b of the core 214 provided on the slider 213 of the coil unit 210 on the vehicle body B side. Is introduced into the secondary coil 222 of the coil unit 220 on the door DB (DS) side, and the tip is introduced.
[0051]
  When the door DB (DS) is closed, the permanent magnets 216 and 223 provided on the coil units 210 and 220 are attracted to each other, and the slider 213 is drawn toward the door DB (DS). Here, at the moment when the door DB (DS) is closed, the edge of the door DB (DS) is narrowed so that the clearance C (see FIG. 9) between the edge of the door DB (DS) and the vehicle body B is narrowed by the inertial force. The coil unit 220 on the door DB (DS) side suddenly approaches the coil unit 210 on the vehicle body B side along with this, although it is slightly but elastically deformed. However, in the illustrated embodiment, since the slider 213 of the coil unit 210 is retracted to the inner back side of the receiving recess 212 by the coil spring 217, coupled with the fact that the coil spring 217 is elastically deformed to provide a drag force. The slider 213 moves slowly, and eventually the permanent magnets 216 and 223 are joined as shown in FIG. As a result, the cores 214 and 221 do not excessively collide with each other due to the elastic deformation that occurs when the door DB (DS) is closed.
[0052]
  When both permanent magnets 216 and 223 are joined, the cylindrical body 214 b of the core 214 enters the core 221, and the primary coil 215 faces the radial direction in the secondary coil 222. On the other hand, the end surface 221c of the core 221 on the door DB (DS) side abuts on the flange portion 214a of the core 214 on the vehicle body B side, and the end surface of the cylindrical body 214b abuts on the inner bottom portion of the core 221. Thus, a magnetic circuit penetrating the coils 215 and 222 is formed. Accordingly, when the primary coil 215 is energized from the vehicle body B, an electromotive force is generated in the secondary coil 222 due to the electromagnetic induction phenomenon, and the electrical component 2 a connected to the secondary coil 222 can be energized. In this process, the door DB (DS) returns to the natural state from the elastic deformation described above.
[0053]
  Next, when the door DB (DS) is opened, the coil springs 217 return to the free state and the slider 213 is accommodated where the coil units 210 and 220 are separated from each other and the tensile force by the permanent magnets 216 and 223 hardly acts. It returns to the retracted position on the inner back side of the recess 212.
[0054]
  Then, by appropriately adopting the connectors 1 and 2 described above, it is possible to establish a suitable energization system suitable for the energization characteristics of the electrical components 1a and 2a of the door DB (DS).
[0055]
  As described above, according to the present embodiment, the inverter CV connected to the AC power output terminal (for example, AC output outlet B1) of the vehicle body B can be shared as an inverter for the induction connector 1 (2). Therefore, in establishing a power supply system that employs the induction connector 1 (2), the cost can be reduced, the weight is reduced, and the power supply mechanism is simplified. In addition, since the inverter CV is shared, countermeasures against electromagnetic noise are unified and facilitated, and the induction connector 1 (2) can be employed in a wider range of electrical components 1a and 2a. In addition, the maintenance of the inverter CV also has the advantage that the work can be facilitated by checking / repairing a single location when a trouble occurs. Therefore, according to the present embodiment, there is a remarkable effect that it is possible to establish an inexpensive power supply system that is excellent in maintainability, lightweight, and easy to take noise countermeasures.
[0056]
  Further, a connector output terminal T3 is attached to the casing CV1 of the inverter CV, and the induction connector 1 (2) is connected to the inverter CV via an output harness WH2 connected to the output terminal T3. Therefore, it is possible to share the casing CV1. As a result, input / output lines serving as noise entrances and through holes when attaching the output harness WH2 to the casing CV1 can be reduced as much as possible, and noise prevention measures can be easily taken. In addition, there is an advantage that wiring work and maintenance work become easy.
[0057]
  In particular, the induction connector 1 (2) is a primary coil of the transformer CV4 built in the inverter CV.(Primary coil for transformer)Secondary coil magnetically coupled to CV41(Connector side secondary coil for transformer)Since it is connected to the inverter CV via the CV 43, when converting the voltage of the induction connector 1 (2), the transformer CV4 connected to the inverter CV is also used as the transformer for the induction connector 1 (2). It can be used together as CV4 and contributes to further cost reduction.
[0058]
  Further, since the switching element CV2 of the inverter CV is surrounded by the metal member (the surrounding board CV3) in the casing CV1, the electromagnetic noise due to the switching element CV2 is avoided as much as possible by the surrounding board CV3. The output voltage of the inverter CV is output to the induction connector 1 (2), the influence of noise is suppressed as much as possible, and the induction connector 1 (2) is adopted in a wider range of electrical components 1a, 2a. There is an advantage that becomes possible.
[0059]
  In addition, when the induction connector is the rotary connector 1 described above, the rotary connector 1 is relatively rotated around a predetermined hinge shaft 3 with the primary coil 15a and the secondary coil 25a facing each other. For example, when power is supplied to the electrical components 1a and 2a mounted on the hinged door DB (DS), the electrical component 1a that requires power supply regardless of the open / closed state of the door is used. It is possible to supply power appropriately, and there is an advantage that versatility of the induction connector is increased.
[0060]
  The above-described embodiments are merely preferred specific examples of the present invention, and the present invention is not limited to the above-described embodiments.
[0061]
  For example, a plurality of induction connectors 1 (2) may be connected to one inverter CV. As an aspect thereof, a plurality of induction connectors of the same type may be connected, and the rotary connector 1 and the contact / separation connector 2 may be used in combination. When a plurality of induction connectors 1 (2) are connected, there is an advantage that unified management of the inverter CV becomes easier.
[0062]
  In addition, FIG. 11 shows an aspect different from the present invention, and FIG.Adopting a structure in which the primary coil 15 (215) of the induction connector is directly connected between the switching element CV2 of the inverter CV and the transformer CV4.Shows what you did.
[0063]
On the other hand, FIG. 12 shows an embodiment of the present invention.Existing in transformer CV4The secondary coil CV43 is a transformer secondary coil, the secondary coil CV42 is a transformer connector side secondary coil, and this secondary coil CV42.At the downstream end (between the filter circuit and the output terminal T1)Primary coil 15 of dielectric connectorAdopting a connection configurationShows what you did.
[0064]
  As another embodiment of the present invention,As shown in FIG. 13, a secondary coil CV44 separate from the secondary coils CV42 and CV43 already provided in the transformer CV4 is provided for connection, and the induction connector 1 (2) is connected to the secondary coil CV44. Also good. In this case, although the number of parts increases, the voltage of the induction connector 1 (2) can be set to a desired value simply by changing the specification of the secondary coil provided for connection of the induction connector 1 (2). It is possible to change, and there is an advantage that the maintainability and the freedom of design are improved.
[0065]
  In the configuration below FIG. 4, the unit 20 may be provided on the vehicle body B side, and the unit 10 may be provided on the door DB (DS). Similarly, in the configuration of FIG. 8 and the subsequent figures, the unit 220 may be provided on the vehicle body B side, and the unit 210 may be provided on the door DB (DS). Alternatively, a plurality of rotary connectors 1 or a plurality of contact / separation connectors may be provided according to the mode of the electrical components 1a and 2a.
[0066]
  Furthermore, the application of the contact / separation type connector 2 out of the above-described induction connector 1 (2) is not limited to the hinge type door, but can be applied to a sliding type door. In addition, the connectors 1 and 2 may be employed for power feeding purposes other than electrical components for the door.
[0067]
  It goes without saying that various modifications can be made within the scope of the claims of the present invention.
[0068]
【The invention's effect】
  As described above, according to the present invention, the inverter connected to the AC power output terminal of the vehicle body can be shared as the inverter for the induction connector. Therefore, in establishing a power supply system that employs the induction connector. The cost can be reduced, the weight is reduced, and the power feeding mechanism is simplified. In addition, since the inverter is shared, the countermeasures against electromagnetic noise are unified and facilitated, and the induction connector can be used in a wider range of electrical components. In addition, the maintenance of the inverter also has the advantage that it is only necessary to inspect / repair a single location when trouble occurs, and the work becomes easy. Therefore, according to the present invention, there is a remarkable effect that it is possible to establish an inexpensive power supply system that is excellent in maintainability, is lightweight, and is easy to take noise countermeasures.
[0069]
  Further, the output terminal for the induction connector is a transformer built in the inverter.Transformer connector sideConnected to secondary coilBecauseWhen changing the voltage of the induction connector, the transformer connected to the inverter can also be used as a transformer for the induction connector, which contributes to further cost reduction.
[0070]
  Furthermore, the transformer is connected to the AC power output terminal.For transformerSeparate from secondary coilTransformer connector sideA secondary coil is provided and thisTransformer connector sideThe induction connector output terminal is connected to the secondary coil.So this transformer connector sideBy simply changing the specifications of the secondary coil, the voltage of the induction connector can be set / changed to a desired value, and there is an advantage that the maintainability and the degree of design freedom are improved.
[0071]
  In particular, when a plurality of induction connectors are connected to the inverter, more induction connectors share the inverter of the vehicle body, and centralized management of the inverter becomes easy.
[0072]
  In addition, when the output terminal for the induction connector connected to the primary coil of the induction connector is attached to the casing of the inverter, the casing can also be shared. In addition, it is possible to reduce as many through-holes as possible when attaching the output harness to the casing, and it is possible to easily take noise prevention measures. In addition, there is an advantage that wiring work and maintenance work become easy.
[0073]
  Further, when the switching element of the inverter is surrounded by a metal member, the voltage of the inverter is the primary voltage of the induction connector in a state where electromagnetic noise due to the switching element is avoided as much as possible by the metal member. As a result, the influence of noise is suppressed as much as possible, and the induction connector can be used in a wider range of electrical components.
[0074]
  In addition, when the induction connector includes a rotary connector that is disposed so as to be relatively rotatable around a predetermined rotation axis while the primary coil and the secondary coil face each other. For example, when power is supplied to electrical components mounted on a hinged door, it is possible to supply power appropriately to electrical components that require power supply regardless of the open / closed state of the door, and the versatility of the induction connector is further increased. There is an advantage.
[Brief description of the drawings]
FIG. 1 is a circuit diagram showing a schematic configuration according to an embodiment of the present invention.
FIG. 2 is a perspective view schematically showing the mounting example (back door example) of FIG. 1;
FIG. 3 is a perspective view schematically showing another mounting example (example of a side door) in FIG. 1;
4 is a perspective view of a rotary connector that can be employed in the embodiment of FIG. 1;
FIG. 5 is a cross-sectional view of FIG.
6 is an exploded cross-sectional view of FIG.
7 is a side view of FIG. 4. FIG.
FIG. 8 is a cross-sectional view showing an example of a contact / separation type connector applicable to the present invention when the door is open.
9 is a cross-sectional view of the contact / separation-type connector of FIG. 8 at the moment when the door is being closed.
10 is a cross-sectional view showing a fitting state of the connector of FIG.
FIG. 11 shows the present invention.Different fromIt is a circuit diagram concerning an embodiment.
FIG. 12 is a circuit diagram according to another embodiment of the present invention.
FIG. 13 is a circuit diagram according to another embodiment of the present invention.
[Explanation of symbols]
B body
B1 AC output outlet (AC power output terminal)
DB backdoor
CV inverter
CV1 casing
CV2 switching element
CV3 Go board (metal member)
CV4 transformer
CV41 primary coil(Primary coil for transformer)
CV42 secondary coil(Secondary coil for transformer or secondary coil for transformer connector)
CV43 secondary coil(Secondary coil for connector on transformer or secondary coil for transformer)
CV44 secondary coil(Connector side secondary coil for transformer)
PW DC power supply
Output terminal for T3 induction connector
1 Rotating connector (induction connector)
1a, 2a Electrical components
2 Contact / separation type connector (induction connector)
15a Primary coil (Primary coil for connector)
25a Secondary coil (secondary coil for connectors)

Claims (5)

DC power supply, AC power output terminal, transformer primary coil connected to the DC power supply, and transformer secondary coil magnetically coupled to the transformer primary coil and connected to the AC current output terminal In an electromagnetic induction power supply apparatus provided in a vehicle in which an inverter for outputting AC power from the DC power supply device to the AC power output terminal is provided in a vehicle body, a primary coil for a connector , comprising an induction connector and a secondary coil connector for forming a magnetic circuit between the connector primary coil, the connector primary coil of the induction connector, the transformer for a secondary that is connected to the alternating current output terminal A secondary connector on the transformer side that is provided separately from the secondary coil and is magnetically coupled to the common primary coil for transformer together with the secondary coil for transformer. Electromagnetic induction type power supply apparatus characterized by being connected to Le.   2. The electromagnetic induction power feeding device according to claim 1, wherein a plurality of induction connectors are connected to the inverter. In the electromagnetic induction type power feeding apparatus according to claim 2, wherein the inverter comprises a casing incorporating the transformer, to the casing, the connector of the induction connector is connected to the transformer connector side secondary coil An electromagnetic induction power supply apparatus, wherein an output terminal for an induction connector connected to a primary coil for use is attached. 4. The electromagnetic induction power feeding device according to claim 1, wherein the switching element of the inverter is surrounded by a grounded metal member . 5. 5. The electromagnetic induction power feeding device according to claim 1, wherein the induction connector is relative to a predetermined rotation axis while the connector primary coil and the connector secondary coil face each other. The electromagnetic induction type electric power feeder characterized by including the rotation-type connector arrange | positioned so that rotation was possible .

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